here we go... from the "Proxy Behaviour" section
16.3 Request Validation
1. Reasonable syntax check
The request MUST be well-formed enough to be handled with a server
transaction. Any components involved in the remainder of these
Request Validation steps or the Request Forwarding section MUST be
well-formed. Any other components, well-formed or not, SHOULD be
ignored and remain unchanged when the message is forwarded. For
instance, an element would not reject a request because of a
malformed Date header field. Likewise, a proxy would not remove a
malformed Date header field before forwarding a request.
This protocol is designed to be extended. Future extensions may
define new methods and header fields at any time. An element MUST
NOT refuse to proxy a request because it contains a method or
header field it does not know about.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Attila
Sipos
Sent: 09 February 2009 11:00
To: Iñaki Baz Castillo
Cc: [email protected]
Subject: Re: [Sip-implementors] "Reason-Header" inCANCELthroughvariousproxies
I think it's in RFC 3261 in the proxy section.
I'll have to look.
But it's like the general rule for UA:
It a UA doesn't understand a header it should ignore it.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Iñaki Baz
Castillo
Sent: 09 February 2009 10:54
Cc: [email protected]
Subject: Re: [Sip-implementors] "Reason-Header" in CANCELthroughvariousproxies
2009/2/9 Attila Sipos <[email protected]>:
> Yes,
>
> Proxies should respect ALL headers.
>
> Or more generally, if a proxy doesn't understand a header it should
> forward it on.
>
> This is the only way for SIP to work for future headers.
Where is it specified? I'd like to know it in order to report it to some proxy
implementations.
--
Iñaki Baz Castillo
<[email protected]>
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